$FreeBSD$

* Multi purpose pin (MPP) configuration.

Required properties:

- pin-map : array of pin configurations. Each pin is defined by 2 cells,
  respectively: <pin> <function>. Pins not specified in the pin-map property
  are assumed to have default value of <function> = 0, which means GPIO.

  - pin : pin number.

  - function : function ID of the pin according to the assignment tables in
    User Manual. Each pin can have many possible functions depending on the
    MPP unit incarnation.

- pin-count: number of the physical MPP connections on the SOC (depending on
  the model it can be 24-50, or possibly else in future devices).

Example:

	mpp@10000 {
		#pin-cells = <2>;
		compatible = "mrvl,mpp";
		reg = <0x10000 0x34>;
		pin-count= <50>;
		pin-map = <
			0  1		/* MPP[0]:  NF_IO[2] */
			1  1		/* MPP[1]:  NF_IO[3] */
			2  1		/* MPP[2]:  NF_IO[4] */
			3  1		/* MPP[3]:  NF_IO[5] */
			4  1		/* MPP[4]:  NF_IO[6] */
			5  1		/* MPP[5]:  NF_IO[7] */
			6  1		/* MPP[6]:  SYSRST_OUTn */
			7  2		/* MPP[7]:  SPI_SCn */
			8  1		/* MPP[8]:  TW_SDA */
			9  1		/* MPP[9]:  TW_SCK */
			10 3		/* MPP[10]: UA0_TXD */
			11 3		/* MPP[11]: UA0_RXD */
			12 1		/* MPP[12]: SD_CLK */
			13 1		/* MPP[13]: SD_CMD */
			14 1		/* MPP[14]: SD_D[0] */
			15 1		/* MPP[15]: SD_D[1] */
			16 1		/* MPP[16]: SD_D[2] */
			17 1		/* MPP[17]: SD_D[3] */
			18 1		/* MPP[18]: NF_IO[0] */
			19 1		/* MPP[19]: NF_IO[1] */
			20 5		/* MPP[20]: SATA1_AC */
			21 5 >;		/* MPP[21]: SATA0_AC */
	};